lettuce irrigation Articles
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Microbial risk in wastewater irrigated lettuce: comparing Escherichia coli contamination from an experimental site with a laboratory approach
This study assessed the contamination of Escherichia coli, in lettuce grown with treated domestic wastewater in four different irrigation configurations: open spray, spray under plastic sheet cover, open drip and drip under plastic sheet cover. Samples of lettuce from each irrigation configuration and irrigating wastewater were collected during the growing season. No E. coli was detected in ...
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A probabilistic assessment of the contribution of wastewater-irrigated lettuce to
Escherichia coli O157:H7 infection risk and disease burden in Kumasi, GhanaWastewater use for vegetable production is widespread across the cities of many developing countries. Studies on the microbial health risks associated with the practice have largely depended on faecal indicator organisms with potential underestimation or overestimation of the microbial health risks and disease burdens. This study assessed the Escherichia coli O157:H7 infection risk and ...
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Accumulation of contaminants of emerging concern in food crops, part one: Edible strawberries and lettuce grown in reclaimed water
Contaminants of emerging concern (CECs) present in domestic waste streams include a highly diverse group of potentially biologically‐active compounds that can be detected at trace levels in wastewater. Concerns about potential uptake into crops arise when reclaimed water is used in food crop production. The present study investigated how nine CECs in reclaimed water are taken up into edible ...
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A probabilistic QMRA of
Salmonella in direct agricultural reuse of treated municipal wastewaterDeveloping reliable quantitative microbial risk assessment (QMRA) procedures aids in setting recommendations on reuse applications of treated wastewater. In this study, a probabilistic QMRA to determine the risk of Salmonella infections resulting from the consumption of edible crops irrigated with treated wastewater was conducted. Quantitative polymerase chain reaction (qPCR) was used to ...
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Wastewater retreatment and reuse system for agricultural irrigation in rural villages
Climate changes and continuous population growth increase water demands that will not be met by traditional water resources, like surface and ground water. To handle increased water demand, treated municipal wastewater is offered to farmers for agricultural irrigation. This study aimed to enhance the effluent quality from worn-out sewage treatment facilities in rural villages, retreat effluent ...
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Development and comparison of four methods for the extraction of antibiotics from a vegetative matrix
Studies have shown the potential for antibiotic uptake into food crops from irrigation water and soils containing pharmaceuticals. The objective of this study was to develop and compare methods quantifying uptake of antibiotics in food crops. Four methods were evaluated utilizing freeze and thaw cell lysing (FT), mechanical maceration (MAC), tissue sonication (SON), and microwave assisted ...
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